Arrhythmias & electrophysiology
An unmet need: arrhythmia detection by implantable loop recorder in the systemic right ventricle
Authors' conclusion
Continuous monitoring with an ILR in patients with systemic right ventricle following atrial switch detects clinically relevant arrhythmias that impact decision-making. In this cohort, clinically relevant arrhythmias did not correlate with sudden cardiac death risk.
Study context
- Population
- Patients with systemic RV after atrial switch repair for transposition of the great arteries36 eligible
- Participants
- 24 patients
- Outcome
- Early detection of clinically important arrhythmias by continuous rhythm monitoring with an implantable loop recorder (ILR)
Main finding
As reported in the abstract
Clinically significant ILR recordings · 39.5 months (1.6-72.5)
- Patients making recordings
- 18/24 (75%)
- Recordings made (52% automated)
- 52
- Clinically significant recordings
- 32/52 (62%)
- Patients with clinically significant recordings
- 15/24 (63%)
- Sinus node disease
- 2 patients
- AV block
- 2 patients
- IART
- 7 patients
- IART with sinus node disease or AV block
- 4 patients
Observational data: associations, not effects.
Further findings
Management change prompted by implantable loop recorder (ILR) recordings
- Medication change
- 11 patients
- Beta-blockers
- 9
- Anti-coagulation
- 5
- Stopping anti-coagulation
- 1
- Device therapy recommended
- 7 patients
- Pacemakers (3 for AV block)
- 5
- Defibrillators
- 2
- Declined intervention
- 2 patients
Arrhythmia vs SCD risk
- IART and clinically relevant conduction disease detected irrespective of SCD risk
Arrhythmic death among patients declining intervention
- Arrhythmic death
- 1
Safety
ILR implantation complications
- Complications
- 0
Original publication
An unmet need: arrhythmia detection by implantable loop recorder in the systemic right ventricle. Europace. Published 10 October 2023. doi:10.
Summarised from the published abstract; every number is checked against it